Title :
Cutoff frequencies in optical fibers of arbitrary refractive index profile using the resonance technique
Author :
Boucouvalas, Anthony C. ; Papageorgiou, Christos D.
Author_Institution :
Bournemouth Univ., Bournemouth, UK
fDate :
12/1/1982 12:00:00 AM
Abstract :
We present a very simple and accurate numerical method for calculating the cutoff frequencies of arbitrary refractive index profile optical fibers, including discrete numerical data from profile measurements. From Maxwell´s equations we derive a transmission line equivalent circuit for any mode of an optical fiber which is cutoff frequency dependent. The problem of finding the cutoff frequency of a mode is transformed into finding the resonance frequency of the equivalent circuit. The algorithm uses no Bessel or other complicated functions and could be implemented on small microcomputers.
Keywords :
Optical fibers; Cutoff frequency; Distributed parameter circuits; Equivalent circuits; Frequency measurement; Maxwell equations; Optical fibers; Refractive index; Resonance; Resonant frequency; Transmission line measurements;
Journal_Title :
Quantum Electronics, IEEE Journal of
DOI :
10.1109/JQE.1982.1071485